class Buyer implements Comparable<Buyer>{
	public LocalTime arival;
	public LocalTime departure;

	public Buyer(String arival, int timeSpent)
	{
		this.arival = LocalTime.parse(arival);
		this.departure = this.arival.plusMinutes(timeSpent);
		this.departure = this.departure.isAfter(this.arival) ? this.departure : LocalTime.of(23, 59);
	}

	@Override
	public int compareTo(Buyer arg0) {
		return arival.compareTo(arg0.arival);
	}

	public boolean isIn(LocalTime time)
	{
		return arival.compareTo(time) < 0&&time.compareTo(departure) < 0;
	}
}